But what is Radiation from the sun?Very good question, truth is we don't know fully. See we have a basic idea the sun throws radition at us we know that, and we have computers with sati. that tell us alot. But we only seen 1% of the universe, so we can't even color in the lines if we go that deep. Much more is needed as long as we strive for it, we'll truly understand it. Time will tell